*{
    padding: 0px;
    margin: 0px;
}
body,html{
    width: 100%;
    height: 100%;
}
body{
    position: relative;
    background-image:url("../image/back/b1.jpg");
    background-size: cover;
}
.box{
    width: 30%;
    height: 60%;
    position:absolute;
    top: 160px;
    left: 520px;
    border-radius: 30px;
    background-color: #FFFFFF;
    opacity: 90%;
}
input{
    width: 300px;
    height: 25px;
    margin:5px 0px 0px 75px;
    border: none;
    border-bottom:1px solid black;
}
span{
    color: red;
    font-size: 12px;
}
button{
    width: 100px;
    height: 40px;
    border-radius: 20px;
    margin-top: 20px;
    margin-left: 80px;
    border: none;
    background-color: #0051A6;
    cursor: pointer;
}
a{
    color: black;
    text-decoration: none;
    width: 100%;
    display: inline-block;
    height: 100%;
    line-height: 40px;
}